diff --git a/src/c/funktionen.h b/src/c/funktionen.h
index b6e14ed..54c545a 100644
--- a/src/c/funktionen.h
+++ b/src/c/funktionen.h
@@ -53,4 +53,6 @@ float arcCosine(float x);
 // Function to calculate the arc tangent of a value and return the result in radians
 float arcTangent(float x);
 
+// Function to convert degrees to radians
+float degreesToRadians(float x);
 #endif
\ No newline at end of file